Adjustable mounting



Aprll 5, 1932. F. M. COCKSEDGE ADJUSTABLE MOUNTING Filed Dec '16, 1930Inventor: \"GClBTiCK M. CocKsedge,

Hi5 Attorney Patented Apr. 5, 1932 UNITED STATES Parana FFHCE jFREDERICK MALLER COQKSEIDGE, F RUGBY, ENGLAND, ASSIGNOR T0 GENERAL ELEC-TRIO COMPANY, A CQRPORATION OF NEW YORK ADJUSTABLE MOUNTING Applicationfiled. December 16, 1930, Serial No.

This invention relates to an adjustable mounting and provides for thequick and accurate adjustment of a member supported thereby.

While I show and describe the adjustable mounting as applied to anelectric lamp holder, it is to be understood that it is not limitedthereto, but may be used wherever applicable.

Frequently, when an electric lamp is supported relative to a reflector,as in a floodlight projector, it becomes necessary to change thepositionof the lamp relative to the reflector. Such cases occur whenvarious types and sizes of lamps are used with the same reflector, thuschanging the position of the illuminating means relative to thereflector, with the result that the lamp is not properly focused.

, The same thing happens when diflerent types of reflectors areinterchangeably used in the floodlight structure. With the use of myadjustable mounting, the lamps can be properly focused relative to thereflector at any time.

The object of the invention, therefore, is to provide an improvedadjustable mounting for a holder or supporting member.

For a consideration of what I believe to be novel and my invention,attention is directed to the following specification and the claimsappended thereto.

In the drawings, Fig. l is an elevation partly in section showing myadjustable mounting means applied to an electric lamp holder, and Fig. 2is a section along the line 2-2 of Fig. 1.

Referring to the drawings, there is shown at 5 the casing of afloodlight projector. A shaft 6 is fixedly mounted in opposite walls ofthe casing, the shaft being screw-threaded for the greater part of itslength. A plate 7, has an enlarged edge 8 which is provided with anaxial bore to receive the shaft 6, the plate thus being pivoted on theshaft and free to slide axially thereof. Midway its length, the enlargededge of the plate is slotted transversely as shown at 9, and in thisslot there is a nut 10 which is provided with a threaded bore throughwhich passes the shaft 6. It is thus apparent that rotation of the nutin a clockwise direction will move 502,751, and. in Great BritainJanuary 3, 1930.

the plate in one direction along the shaft 6, while rotation of the nutin a counter-clockwise direction will move the plate in the oppositedirection along the shaft.

The edge of the plate opposite the enlarged edge 8 is formed as an earor lug 11 which is provided with a central bore in which is journalled atlieaded rod 12. The rod 12 projects below the plate and this projecting portion is provided with a knob 13 whereby the rod may bemanually rotated. Projecting from the body of the plate are a pluralityof guide rods 14-, which are parallel to the threaded rod 12, the guiderods being fixedly secured to the plate by suitable fastening means suchas nuts 14a. A holder 15, for an electric lamp, has its base formed withapertured extensions or lugs 16, through which pass the guide rods 14,the holder thus being slidable along the guide rods. A lug 17 alsoformed on the base of the holder is provided with an axialscrew-threaded bore for the reception of the threaded rod 12. Thusrotation of the rod 12 will cause the holder to be adjusted along theguide rods 14:, relative to the plate 7. A wall of the casing 5 isformed with an interiorly projecting lug 18 which is provided with athreaded bore for the reception of a threaded rod 19. The rod 19, at itsfree end, is provided with a knob 20 whereby the rod may be manuallyrotated. Mounted on the rod and suitably spaced from the inner face ofthe knob is a washer or flange member 21 of the same diameter as theinner face of the knob 20, the space between the knob and the flangemember thus forming an annular groove in which is received the free endof a lever or arm22 that projects laterally from the edge of the plate7. Rotation of the rod 19 will cause the rod to move up or down throughthe lug 18 and will cause the plate 7 to be rotated about the shaft 6. Aspring 23, situated between the flange member 21 and the adjacent faceof the lug 18, surrounds the rod 19 and serves to prevent any axialmovement of the rod 19 due to wear, thereby maintaining the plate 7 inits adjusted position about the shaft 6.

From the foregoing description, it will be apparent that three separateand independent adjustments are provided for the lamp holder. Byrotating the nut 10 the holder can be moved laterally in the casing. Byrotating the threaded rod 12 the holder can be raised and lowered in thecasing and by rotating the threaded rod 19, the holder can be swungabout the shaft 6 to position the lamp in a plane transverse to itsplane of lateral movement. By these adjustments the lamp may be movedlaterally of a reflector positioned in the casing, toward and away fromthe reflector, and may also be raised and lowered relative to thereflector.

In accordance with the provisions of the patent statutes I havedescribed what I now consider to represent the best embodiment of myinvention, but it is to be understood that the structure shown is merelyillustrative and that the invention may be carried out by other means.

What I claim as new and desire to secure by Letters Patent of the UnitedStates is:

1. An adjustable mounting comprising a non-rotatable shaft, a platepivoted on said shaft and slidable axially thereof, means for movingsaid plate along said shaft, a holder supported b said plate, means formoving said holder at ri ht angles to said plate, and means forpivotally adjusting the plate about said shaft.

2. An adjustable mounting comprising a non-rotatable shaft, a platepivoted on said shaft and slidable axially thereof, means for movingsaid plate along said shaft, guide rods projectingat right angles fromsaid plate, a holder, said holder being slidable on said guide rods,means for adjusting said holder along the guide rods, and means forpivotally adjusting the plate about said shaft.

3. An adjustable mounting for a holder comprising a non-rotatablescrew-threaded shaft, a plate pivoted on said shaft, and slidableaxially thereof, screw-threaded means cooperating with said shaft andabutting said plate for moving said plate along said shaft, a pluralityof guide rods projecting from said plate, said holder being slidable onsaid guide rods, means for adjusting said holder along the guide rodsand means for pivotally adjusting said plate about said shaft.

4. Means for adjustably mounting a holder comprising a non-rotatablescrew-threaded shaft, a plate pivotally mounted on said shaft, andslidable axially thereof, screw-threaded means cooperating with saidshaft and abutting said plate for moving said plate along said shaft, apair of guide rods projecting from said plate, said holder beingslidable on said guide rods, a screw-threaded rod journalled in saidplate, said holder having a threaded opening through which the screwthreaded rod extends for adjusting said neaaeoe holder along said guiderods, and means for pivotallly adjusting said plate about said shaft.

5. Means for adj ustably mounting a holder comprising a non-rotatablescrew-threaded shaft, a plate pivotally mounted on said shaft andslidable axially thereof, screw-threaded means cooperating with saidshaft and engaging said plate for moving said plate along said shaft, apair of guide rods projecting from s id plate, said holder beingslidable on said guide rods, a screw-threaded rod journalled in saidplate, said holder having a threaded opening through which thescrewthreaded rod extends for adjusting said holder along said guiderods, a lever projecting from said plate and means for raising andlowering said lever for rotating said plate about said shaft.

(3. The combination with a lamp holder of means for adjustably mountingsaid holder, said means comprising a casing, a shaft fixedly mounted inopposite walls ofsaid casing, said shaft being screwthreaded for thegreater part of i s length, a plate pivotally moun l on said shaft, andslidable axially thereof, screw-threaded means cooperating with saidshaft and engaging said plate for moving said plate along said shaft,guide rods projecting from said plate, said holder being slidable alongsaid guide rods, a screwthreaded rod journalled in said plateandprojecting therefrom, said holder having a threaded opening throughwhich the screwthreaded rod extends, a lever projecting from the freeend of said plate, and means carried by the casing and engaging saidlever for rotating said plate about said shaft.

In witness whereof, I have hereunto set my hand this 4th day ofDecember, 1930.

FREDERICK MALLER COCKSE'DGE.

